Brush for cotton-gins.



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UNITED STATES PATENT OFFICE.

BRUSH FOR COTTON-GINS.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed December 22, 1906. Serial No. 349,050.

To all whom it may concern:

Be it known that I, WILLIAM WALTER ROBINSON, a citizen of the United States, and a resident of Alexander City, in the county of Tallapoosa and State of Alabama, have invented a new and Improved Brush for Cotton-Gins, of which the following is a full, clear, and exact description.

This invention is an improvement in brushes for gins or other machines requiring a revoluble brush of simple construction.

The invention resides in a novelly constructed drum or cylinder, on which devices or sticks carrying the bristles of the brush are fixed.

The cylinder is composed principally of sheet metal, providing a strong, light and well-balanced structure, involving little'work in its manufacture and can therefore be produced at a comparatively small cost.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is an inside, end elevation, partly in section, of the preferred form of my invention; Fig. 2 is a central, sectional view of the same on the line 2 2 of Fig. l, Fig. 3 is a plan of a lining strip which is employed in the construction of the brush shown in Figs. l and 2; Fig. 4 is a view similar to Fig. l of a modified form of brush; Fig. 5 is a central section of the same on the line 5 5 of Fig. 4; Fig. 6 is an end elevation of a still further modified form of brush, and Fig. 7 is a central, longitudinal section of the same.

Referring to Figs. l, 2 and 3, l indicates a shalt or spindle for the brush, which has secured to it near each end thereof a hub or collar 2, constructed with a flange 3 adjacent to its inner face. Secured to the flange 3 of each hub by rivets or other suitable devices, is an annular, corrugated, sheet metal head 4, having a series of equally spaced projections 5 at its circumference, each projection being provided with a radially-arranged T-shaped slit 6, the head of the T, which is at right angles to the stem or radial portion of the same, having short, inwardly-extending slits 7 formed at substantially right angles thereto. These slits are formed in each head for the purpose of providing flanged seats for brush sticks 8 carrying bristles 9 on the outer face thereof. In producing these flanged seats the metal is turned at right angles to the head on the dotted lines shown at the left-hand of Fig. l, forming side flanges l() and base flanges ll, all of which are preferably inwardlytuined on the head. As shown in Fig. 2, the heads 4 are not placed at the ends of the drum only, but are positioned on the shaft l at suitable points intermediate its length but, as shown, saidintermediate heads are preferably not secured to said shaft.

Before the `brush-sticks 8 are inserted in the seats of the heads, lining-strips l2 having notches 13 in their edges for receiving the side flanges l0, are placed in the seats adjacent to the base flanges ll. These strips are thereafter inclosed by a sheet metal covering or lining 14, said lining being cut to fit over the projecting flanges of each head and bind each strip in its seat. The brush is completed by inserting the sticks in the seats of the heads and bending the upper ends of each of the side Hanges or projections 5 to embrace the top faces of the sticks, as illustrated in the lower right-hand portion of Fig. l, said figure disclosing one of the heads during the three stages of building the brush.

In the modification shown in Figs. 4 and 5, the shaft l, collar or hub 2 and brush sticks S are of the same construction as in Figs. l and 2. The heads 4*l corresponding to the heads 4 ai'c made of corrugated sheet metal similar to the heads 4, but have sharp corrugations IG near their circumferences for engaging and holding in position a sheet metal body or lining 17. The T- shaped slits 6rL also differ slightly from the slits 6 in the heads 4 in that the inwardly projecting portions 7 are omitted, forming only the side flanges l0a correspond- `ing to the flanges l0 of the preferred form of invention. The ends of these flanges are likewise bent to embrace the brush sticks, as disclosed in the lower righ t-hand portion of Fig. 4. It should be noted in the constructions shown in Figs. 4 and 5, that lining strips are not employed and that the lining I7 is secured directly to the heads.

Figs. G and 7 disclose a still further modified form in which the central shaft l and the end collars 2 are the same as in Figs. l. to 5 inclusive. A corrugated, annular, sheet metal head 4b corresponding to the h cads 4 and 4a is likewise secured to the collar 2 through its flange 3. To the circumferences of the heads 4h are riveted or otherwise attached east metal rings 18, having formed in the circumference of each a series of equally-spaced dove-tailed seats 18a, each seat being surrounded by an Vinwardly-projecting flange 19, as clearly illustrated in dotted ouline in Fig. 6. It is obvious from this construction that the brush sticks are retained in place by reason of the dove-tailed form of the seats, and are likewise dovetailed to closely fit therein.

Although I have described the preferred form of my invention, I regard the precise construction as not material provided its essential characteristics are employed as pointed out in the annexed claims.

i Having thus described my invention I claim as new and desire to secure by Letters Patent:

1. A brush comprising a shaft havingannular, sheet metal heads secured thereto, each head having a sci'ies of seats arranged about its circumference, each seat having' side flanges, a lining secured to the heads forming a body for the brush, and brush sticks seated in alining seats atl-- jacent to said lining', said flanges having their upper ends bent inwardly to retain the sticks in place.

2. A brush comprising annular sheet metal heads, each havingr a series of seats spaced about the circumference thereof, side flanges arranged at each side of each sent, il

lining` sti-ip seated in aiiningseats of the heads, :l lining inclosingsaid strips forming the body of the brush, :i brush stick seated in :dining seats 0f the heads adjacent to the 5 lining, and means for securing said sticks in place.

3. A brush comprising z'lnnular, corrugated sheet metal heads, each having a sei-ies of seats formed in the circumference thereof, each seat having u base and side anges, lining strips seated in :dining seats of the heads and rest- 10 ing on the base anges thereof, :1 sheet metal lining iuclosing said sti-ips ind forming the body of the brush, and brush sticks seated in alining seats of the heads adjacent to the lining and held in place by said side flanges.

In testimony whereof I have signed my nume to this specification in the presence of two subscribing Witnesses. 15

WILLIAM WALTER ROBINSON.

Witnesses:

BnNJ. RUssnLL, J. H. HnNDnRsoN. 

